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Welding and Cutting. 29 CFR 1926 - Subpart J. Objectives. In this course, we will discuss the following: OSHA’s minimum requirements for: Gas welding and cutting Arc welding and cutting Fire prevention Ventilation and protection

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Welding and Cutting

29 CFR 1926 - Subpart J


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Objectives

In this course, we will discuss the following:

  • OSHA’s minimum requirements for:

    • Gas welding and cutting

    • Arc welding and cutting

    • Fire prevention

    • Ventilation and protection

  • Safe use, handling, and precautions to take when welding and cutting

  • Hazard identification and abatement methods


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Subpart J – Welding and Cutting

  • 1926.350 – Gas welding and cutting

  • 1926.351 – Arc welding and cutting

  • 1926.352 – Fire prevention

  • 1926.353 – Ventilation and protection in welding, cutting, and heating

  • 1926.354 – Welding, cutting, and heating in way of preservative coatings


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Gas Welding and Cutting

1926.350(a)(1)

  • Compressed gas cylinders must have valve protection caps in place and secured except when in use.


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Gas Welding and Cutting

1926.350(a)(2)

  • Compressed gas cylinders must only be hoisted while secured, as on a cradle or pallet.

  • Cylinders must not be hoisted by magnet, choker sling, or cylinder caps.


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Gas Welding and Cutting

1926.350(a)(3)

  • Cylinders shall be moved by tilting or rolling on their bottom edges.


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Gas Welding and Cutting

1926.350(a)(4)

  • Cylinders must be secured in a vertical position when transported by powered vehicles.


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Gas Welding and Cutting

1926.350(a)(5)

  • Valve protection caps must not be used for lifting cylinders.

  • Frozen cylinders must not be:

    • Pried loose with bars

      under valves or valve

      protection caps

    • Hit with a tool

    • Thawed by boiling water


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Gas Welding and Cutting

1926.350(a)(7)

  • Cylinders must be secured while in use.

  • A suitable cylinder truck, chain, or other steadying device must be used to keep cylinders from being knocked over.


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Gas Welding and Cutting

1926.350(a)(8)

  • Valves must be closed when work is finished, cylinders are empty or when moved.


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Gas Welding and Cutting

1926.350(a)(9)

  • Cylinders must be secured upright except when being hoisted or carried.


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Gas Welding and Cutting

1926.350(a)(10)

  • Oxygen cylinders must be separated from fuel gas cylinders and combustible materials.

    • Either a minimum of 20 feet, or

    • A barrier at least 5 feet high having a fire resistance rating of 30 minutes.


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Gas Welding and Cutting

1926.350(b)(1)-(4)

  • Cylinders must not be exposed to sparks, hot slag or flame.

  • Cylinders must not become part of an electrical circuit or have electrodes struck

    against them.

  • Fuel gas cylinders must be

    placed with valve end up

    when in use.

  • Fuel gas cylinders shall

    not be taken into confined

    spaces.


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Gas Welding and Cutting

1926.350(c)(1)-(2)

  • Cylinders must not be used as rollers or supports.

  • No damaged or

    defective cylinder

    shall be used.


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Gas Welding and Cutting

1926.350(d)(1)

  • Before regulators are connected, valve must be slightly opened and then immediately closed to clear away dust or dirt.


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Gas Welding and Cutting

1926.350(d)(2)

  • Where a special wrench is required to close valve, it must be left in position on the stem.


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Gas Welding and Cutting

1926.350(d)(2)


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Gas Welding and Cutting

1926.350(f)(1)

  • Fuel gas and oxygen hoses must be easily distinguishable from each other by color or sense of touch.

  • Oxygen and fuel gas hoses

    must not be interchangeable.


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Gas Welding and Cutting

1926.350(f)(2)

  • When parallel sections of oxygen and fuel gas hoses are taped together, not more than 4″ out of 12″ shall be covered by tape.


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Gas Welding and Cutting

1926.350(f)(3)-(4)

  • Hoses must be inspected before use.

  • Defective hose must not be used.

  • Hose subjected to

    flashback, severe

    wear or damage

    must be tested to

    twice the normal

    working pressure.


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Gas Welding and Cutting

  • When not in use or work is completed:

    • Close valve

    • Bleed lines of pressure


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Gas Welding and Cutting

1926.350(f)(7)

  • Hoses, cables, and other equipment must be kept clear of passageways, ladders and stairs.


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Gas Welding and Cutting

1926.350(g)(1)

  • Torch tip openings must only be cleaned with devices designed for that purpose.


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Gas Welding and Cutting

1926.350(g)(2)

  • Torches must be inspected before each use for leaking valves, hose couplings and tip connections.

  • Defective torches must not be used.


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Gas Welding and Cutting

1926.350(g)(3)

  • Torches must not be lit from matches, cigarette lighters, other flames or hot work.

  • They must be lighted by friction lighters or other approved devices.


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Gas Welding and Cutting

1926.350(h)

  • Pressure regulators and gauges must be maintained in safe working order.

Oxygen regulator exploding


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Gas Welding and Cutting

1926.350(i)

  • Oxygen cylinders and fittings must be kept away from oil and grease.


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Arc Welding and Cutting

1926.351(a)(1)

  • Only manual electrode holders designed for arc welding must be used.


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Arc Welding and Cutting

1926.351(a)(2)

  • Current-carrying parts passing through a manual electrode holder to be held by the user must be insulated against the maximum voltage.


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Arc Welding and Cutting

1926.351(b)(2)

  • Cables must be free of repair or splices for 10 feet from holder unless insulated to equal value of cable.

  • Worn or exposed cable must be protected by insulation equal to original value of cable or not used.


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Arc Welding and Cutting

1926.351(c)(1)

  • Ground return cables must have maximum current carrying capacity of unit served.


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Arc Welding and Cutting

1926.351(d)(1)

  • Unattended electrode holders must be made safe by removing electrodes and placed or protected to prevent injury.


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Arc Welding and Cutting

1926.351(d)(3)

  • When the welder leaves, stops work, or moves the welding machine, power supply switch must be turned off.


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Arc Welding and Cutting

1926.351(d)(4)

  • Arc welding or cutting equipment which is faulty or defective must not be used.


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Arc Welding and Cutting

1926.351(e)

  • Arc welding/cutting operations shall be shielded or screened off to protect employees in the vicinity from direct rays and sparks.


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Fire Prevention

1926.352(a)-(b)

  • To the extent possible, hot work must be performed in designated areas free of fire hazards.

  • Hot work done in areas

    not free of fire hazards

    • Precautions taken to

      confine heat, sparks,

      and slag - cannot

      contact flammable

      or combustible

      material.


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Fire Prevention

1926.352(d)

  • Fire extinguishing equipment must be readily available and maintained in readiness for use.


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Fire Prevention

1926.352(e)

  • When normal fire prevention precautions are not sufficient, additional personnel must be assigned to guard against fire during hot work.


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Fire Prevention

1926.352(h)

  • Drums and containers of flammable or combustible liquids must be kept closed.

  • Empty containers must be removed from the hot work area.


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Ventilation and Protection

1926.353(a)(1)

  • Local exhaust ventilation must keep smoke and fumes in the breathing zone within safe limits.

    • As defined in Subpart D - Occupational Health and Environmental Controls


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Ventilation and Protection

1926.353(a)(6)

  • Oxygen must not be used for ventilation, cooling or cleaning.


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Ventilation and Protection

1926.353(b)(1)-(3)

  • When hot work is performed in a confined space:

    • General mechanical or local exhaust must be provided,or

    • Employees in the space must wear supplied air respirators,and

    • An attendant on the

      outside must be equipped

      and prepared to provide

      emergency aid.


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Welding in Confined Spaces

1926.353(c)(1)

Steel-toe boots


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Ventilation and Protection

1926.353(d)(1)(ii)

  • Employees exposed to welding arcs or sparks must be protected by filter lenses.

    • Meet the requirements of Subpart E

      • 1926.102 - Eye and face protection


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Ventilation and Protection

1926.353(d)(1)(iii)

  • Workers exposed to radiation must be suitably protected to prevent burns by ultraviolet rays.

  • Welding helmets and hand shields must be free of leaks and openings.


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Ventilation and Protection

1926.353(e)(2)

  • Employees performing any type of welding, cutting or heating must be protected by suitable eye protective equipment.

    • In accordance with

      requirements of Subpart E


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Welding, Cutting and Heating

1926.354(a)-(b)

  • Before hot work is commenced on any surface covered by a preservative coating:

    • Test must be made by competent person to determine flammability.

    • If flammable, must be stripped from area to be heated to prevent ignition.


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Future of Welding

  • Laser welding is one of the newest processes.

  • Even low power lasers can be hazardous to a person’s eyesight.


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Summary

During this course, we discussed:

  • OSHA’s minimum requirements for:

    • Gas welding and cutting

    • Arc welding and cutting

    • Fire prevention

    • Ventilation and protection

  • Safe use, handling, and precaution to take when welding and cutting

  • Hazard identification and abatement methods


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Thank You For Attending!

Final Questions?


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